摘要:
An image of a road area ahead of a vehicle is formed based on road data read from a navigation system, or based on an image shot by a camera means such as a video camera. A temperature profile ahead of the vehicle detected by a temperature detecting means such as an infrared camera is superposed on the image of the road area. As a result, if a low-temperature zone is detected on the road area, it is determined that there is snow or ice existing on the road area, or if a high-temperature zone is detected, it is determined that there is a person or animal existing on the road area, thereby informing a driver by an alarm means or a display means to avoid such an obstruction or hazard. Thus, it is possible to perceive snow, ice, a person and an animal existing on a road ahead of the vehicle without relying on a driver's visual judgment, and to give an alarm so that the driver may timely take an appropriate countermeasure to avoid the obstruction or hazardous situation.
摘要:
Input bit map image data having a resolution of 600 dpi is converted into multivalue image data MI having a resolution of 600 dpi by a binary-to-multivalue converting unit. The multivalue image data MI is converted into multivalue image data having a resolution of 400 dpi by a resolution converting unit. The edge direction of the multivalue image data is detected by an edge direction detecting unit, so as to obtain an edge direction detection flag. Based on the edge direction detection flag, an image data outputting unit outputs multivalue image data having a resolution of 400 dpi from the edge direction detecting unit.
摘要:
A vehicle control system which controls a vehicle in accordance with the curvature of a road as determined from map information comprising a set of coordinate points which represent the course of the road. A passable vehicle speed enabling the vehicle to pass through a plurality of nodes existing at predetermined distances within an operating section established on the road ahead of a given vehicle position is calculated on the assumption that a voluntary speed reduction has been conducted. The radii of a first virtual turning locus and a second virtual turning locus produced at a predetermined lateral acceleration are calculated based on the passable vehicle speeds at the nodes. A passable zone, a warning zone and an automatic speed-reducing zone are established based on the first and second virtual turning locus radii. If any of the nodes ahead of the virtual vehicle position exists in the warning zone, a warning is provided to the driver. If any of the nodes ahead of the virtual vehicle position exists in the automatic speed-reducing zone, automatic speed reduction of the vehicle is carried out.
摘要:
A course travel judging device judges based on outputs from a map information outputting device and a subject vehicle position outputting device whether a subject vehicle is traveling on a course set by a course setting device. If the subject vehicle is traveling on the set course, a vehicle speed is controlled by a travel control device, so that the subject vehicle can safely pass through a curve ahead thereof. If the subject vehicle has deviated from the set course, an alarm is given to an occupant by an alarm device, and the control of vehicle speed by the travel control device is stopped. If a departing possibility judging device judges that there is a possibility of departing of the subject vehicle from the set course, a deviatable course is set by a deviatable course determining device, and the vehicle speed is controlled by the travel control device, so that the subject vehicle can safely pass through a curve having a severest passing condition on either of the set course or the deviatable course. Therefore, even if a vehicle has deviated from a course determined through a navigation system, an appropriate control of vehicle speed can be carried out.
摘要:
A vehicle position is determined and four reference coordinate points N.sub.1, N.sub.2, N.sub.3 and N.sub.4 are extracted at predetermined distances on a road output from a CD-ROM or an IC card, and an angle .theta. of turning of the vehicle from the coordinate point N.sub.2 to the coordinate point N.sub.3 is calculated according to an expression, .theta.=(.theta..sub.1 +.theta..sub.2) from an angle .theta..sub.1 formed by a vector V.sub.12 between the points N.sub.1, N.sub.2 and a vector V.sub.23 between the points N.sub.2, N.sub.3 and an angle .theta..sub.2 formed by the vector V.sub.23 between the points N.sub.2, N.sub.3 and a vector V.sub.34 between the points N.sub.3, N.sub.4. A steering angle permitting the vehicle to safely pass through a curve is calculated based on the turning angle .theta. and a vehicle speed V.sub.0, and a passable vehicle speed permitting the vehicle to safely pass through the curve is calculated based on a radius R=a/.theta. of curvature of the curve. Thus, the servicing of a conventional infrastructure requiring increased equipment and maintenance costs is not required, and it is possible to carry out a vehicle control based on a minimum amount of data storable in a CD-ROM or an IC card.
摘要:
A road surface condition-detecting system for a vehicle detects a road surface condition from road noise generated by a vehicle wheel. The road surface condition is determined based on parameter data of frequency components of the road noise, by a neural network. The road noise may be corrected by eliminating therefrom a disturbance, such as audio output and exhaust noise. A present state of the road surface condition may be determined based on at least two consecutive determinations made based on the road noise detected at regular time intervals. Exclusive neural networks may be used for respective road surface condition types. One of a plurality of neural networks provided for respective vehicle speed ranges may be selected according to an actual vehicle speed. Detected sound pressure levels of the road noise extracted by frequency analysis may be normalized within respective ranges defined by upper and lower limits set corresponding to predetermined frequency ranges before being supplied to the neural network.
摘要:
In an image processing system, there are provided a plurality of plane memories for setting edit commands, a user interface for inputting edit functions, designation of area and instruction for execution, and an edit processing unit for setting and reading the edit commands to plane memories based on the edit functions, designation of area and instruction for execution. The edit processing unit collectively processes extraction and deletion areas after setting the other areas. Further, after depicting an area on a plane for work, the edit processing unit develops content for work for a plane memory for area command setting by logic processing with priority on later designation. By this arrangement, procedures are simplified in edit processing which requires many extractions and deletions, and the time for processing can be reduced.
摘要:
Disclosed is an image processing system which is provided with an image enchasing and synthesizing function for setting an image in a trimmed area of an extracted original sheet into a masked area on a base original sheet and synthesizing the images of the two original sheets. The image processing system includes an area setting section for setting up a masked area on a base original sheet and a trimmed area on an extracted original sheet with positions of the masked area and the trimmed area set properly in alignment with a center of a circumscribed rectangle, an image input section for performing a reading operation on the base original sheet and a reading operation on the extracted original sheet as adjusted to the trimmed area set by the area setting section, an image processing section for performing a masking operation on image data on the base original sheet and an enchasing operation for image data on the extracted original sheet on the basis of a setup of editing areas by the area setting section, and an image output section for putting out image data obtained by enchasing and synthesizing an image of the trimmed area in the masked area on the base original sheet.
摘要:
Provided is a reaction force control device for reducing discomfort experienced by the driver operating the accelerator pedal when continuous curves are being traveled, and setting the characteristics of the reaction force on the accelerator pedal in accordance with the curves. In the case that the target reaction force, which has been set prior to entering a subsequently traveled second curve, is greater than the current reaction force acting on the acceleration pedal and being generated during the turn through the first curve, a reaction force controller controls the operation so as to reduce the target reaction force imparted on the second curve until the vehicle leaves the first curve.
摘要:
Provided is a reaction force control device for reducing discomfort experienced by the driver operating the accelerator pedal when continuous curves are being traveled, and setting the characteristics of the reaction force on the accelerator pedal in accordance with the curves. In the case that the target reaction force, which has been set prior to entering a subsequently traveled second curve, is greater than the current reaction force acting on the acceleration pedal and being generated during the turn through the first curve, a reaction force controller controls the operation so as to reduce the target reaction force imparted on the second curve until the vehicle leaves the first curve.